EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1340 (Pack)

Model MDE 650-68-1340

Condition New

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1340 motor. The unit is assembled and checked at factory, precision balanced and harmonically tuned.

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EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1340 (Pack)

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1340 motor. The unit is assembled and checked at factory, precision balanced and harmonically tuned.

More info

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1340 motor. The unit is assembled and checked at factory, precision balanced and harmonically tuned.

Readings:

8s

9s

10s

12s

Voltage

29,6 V

33,3 V

37,0 V

44,4v

Current

59,5 A

74,5 A

na

90A

Power

1761 W

2481 W

na

3960 W

rpm

Thrust

3,12 kp

3,76 kp

na

4,48 kp

Efflux velocity

71,12 m/s

78,08 m/s

na

na

Efficiency

0,62

0,58

na

na

Controller

> 70 A / HV

> 90 A / HV

> 100 A / HV

> 120 / HV

Battery

3.000-4.000 mAh

3.700-5.000 mAh

3.700-5.000 mAh

3.700-5.000 mAh

Note: using the 1340kv motor with a 12 cells lipo (44,4v) requires a motor heatsink and a cool down of the motor temperature after each flight.

The controller should be chosen 20% over rated due to the long lasting load.LV = low voltage controller up to 6s, HV = high voltage controller above 6s.Battery should be chosen about 15/ - 1/20 of the max current for 4-3 minutes WOT. 30-40 C is appropriate.

Set comprises:

1 x Midi Fan pro ducted fan unit

1 x HET 650-68-1340

inner diameter:

89,0 mm

outer diameter:

92,0 mm

length of shroud:

60 mm, w/o intake lip

weight, complete:

402 grams (opt. intake rin + 19g)

fan swept area:

49,40 sqcm

rotor:

11 blades, nylon (glass reinforced)

rec. thrust tube dia.:

75 mm diameter

Timing ESC:

approx. 6° (4-pole motor)

PWM:

8-12 kHz

Readings:We measure with a constant voltage of 3.7 V / cell. Current and thrust are measured with a small intake lip (r=6 mm) at 21° C, 50m asl and standard pressure. Depending on battery, controller and installation you may see higher or lower figures.

Motor specifications:

Diameter : 36 mm

Length : 67.5 mm

Shaft Dia. : 5 mm

Weight : 300 grams

Internal resistance: 17.5

No load current (lo): 1.5

Max efficiency: 88%

Poles : 4

No load KV : 1340

Suggested lipo cells. : 10-12S

Max amps: 120A (12S)

Power Nominal: 4100 watts

Recommended advance timing : low

Thrust: 4.1 kgs (37.0V) / 5.6 kgs (44.4V)

Specially designed for 9305 and Midi fan units

Midi Fan evo unit Specifications:

Ducted Fan unit of the poular 89 mm Midi Fan class, both optimized for Sound and efficiency. This fan brings efficiency of multibladed fans to a new level. The one piece glass reinforced Nylon rotor comes calibrated and dynamically balanced. All components are compatible to the former Midi Fan pro.

Material: Nylon, ABS, Aluminium

Weight: about 102 grams, incl. intake lip

Power range: 1.000-4.000 W

Max. rpm: 50.000 U/min

Rotor: 11-blades (87,5 mm) glass reinforced Nylon

Set: all parts, incl. instruction

Ageom.: 49,4 qcm

Aeff.: 45,6 qcm

Thrust: 7-50 N

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EDF Ducted Fan Wemotec Midi Fan evo / HET 650-68-1340 (Pack)

Modern high efficiency multi bladed fan unit. The fan unit comes completely mounted with a HET 650-68-1340 motor. The unit is assembled and checked at factory, precision balanced and harmonically tuned.

Assembling and Balancing Service for EDF units and motors. This service is only for EDF up to 90mm size. For larger EDF units please contact us.Assembling and Balancing Service for EDF units and motors. This service is only for EDF...